n. Some or any bird of the genus Gracula, or of one of the synonymous genera, of the old world.n. An American icterine passerine bird of the family Icteridæ and chiefly of the subfamily Quiscalinæ: as, the purple grackle, or crowblackbird, Quiscalus purpureus (see cut under crow-blackbird); the boat-tailed or Texas grackle, Q. major; the rusty grackle, Scolecophagus ferrugineus.n. Also spelled grakle.n. In angling, the name of an artificial fly used in bass-fishing.